In September, Merignac typically sees daytime highs of 23.9°C and overnight lows around 11.7°C. Compared to the annual average high of 17.8°C, September runs +6.1°C.
September in Merignac averages a daytime high of 23.9°C and an overnight low of 11.7°C.
September runs +6.1°C compared to Merignac's annual average high of 17.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 23.9°C and cooler evenings around 11.7°C.